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If radius of circle increase 1% …

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If radius of circle increase 1% then what is increment in area

    • Posted by Alone But Awesome 8 years, 1 month ago

    CBSE > Class 11 > Mathematics
    • 1 answers

    Seema Chauhan 8 years, 1 month ago

    Let the radius of the circle is 'r' then area is πr² And 1%of radius 'r' is r×1%=r÷100 The area of new circle is π(r+r/100)² π(101r/100)² π×10201r²/10000 Increment in area is πr²-πr²10201/10000 πr²(1-10201/10000) πr²(10000-10201/10000) πr² (201/10000) The increment is 201/10000

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